President Donald Trump’s top energy aid—who has worked as a Koch Industries lobbyist—spent the early years of his career peddling climate change denial in conservative newspapers like Human Events and Evans-Novak Political Report.

DeSmog has reviewed articles found in the Human Events archives, no longer found on the publication’s website, and they shed new light on Catanzaro and his views as Trump’s right-hand man on climate, energy, and environmental policy.